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Fig. Ps-2. Memory and instruction formats for special processor.

list of instructions specifying input channels to sample, and limit values for the samples. Figure Ps-2 gives the format of how the instructions are interpreted, together with the structure of a program for Ps. The instruction table can contain any one of four instruction types as specified by bits <15:14>:

00 - Halt. Halt the comparison process, signal the computer by setting a Done-flag and then wait until the processor is reinitiated by the computer.
01 - Set high. Take value in bits <11:0> as a high limit value; incoming results will be compared against this
high value.
11 - Set Low. Take value in bits <11:0> as a low limit value: incoming results will be compared against low value.
10 - Sample and Compare. Take bits <6:0> as line number, set up- an analog multiplexor (switch address), sample the data and compare against the high and low values. When an incoming value is tested and found to be out of range, place it and its address (channel) in

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